.box1 {
	height: 100px;
	width: 200px;
	border: 1px solid red;
	background: linear-gradient(to right top, red, yellow);
	/* rgba:a:透明度 */
	/* background: repeating-linear-gradient(60deg,rgba(255,100,100,0.4),yellow,green); */
	/* background:radial-gradient(at top,red,yellow); */
	/* box-shadow: 0px 0px 7px 10px yellow; */
	border-radius: 5px;
}
